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Finding the Fourth Proportional to 8,573.20, 12,858.72 and 4,674.40

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Solution

The fourth proportional to 8,573.20, 12,858.72 and 4,674.40 is: 7,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,573.20 : 12,858.72 = 4,674.40 : x
  2. Step 2: Convert to fraction form
    8,573.20/12,858.72 = 4,674.40/x
  3. Step 3: Cross multiply
    8,573.20x = 12,858.72 × 4,674.40
  4. Step 4: Simplify right side
    8,573.20x = 60,106,800.77
  5. Step 5: Solve for x
    x = 60,106,800.77/8,573.20
  6. Step 6: Final answer
    x = 7,011.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.